[media] staging: media: omap4iss: Cleanup media entities after unregistration

The ipipeif, ipipe and resizer media entities are cleaned up before
unregistering the media device, creating a race condition. Fix it by
cleaning them up at cleanup time.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/staging/media/omap4iss/iss_ipipe.c

@@ -516,8 +516,6 @@ static int ipipe_init_entities(struct iss_ipipe_device *ipipe)
 
 void omap4iss_ipipe_unregister_entities(struct iss_ipipe_device *ipipe)
 {
-	media_entity_cleanup(&ipipe->subdev.entity);
-
 	v4l2_device_unregister_subdev(&ipipe->subdev);
 }
 
@@ -566,5 +564,7 @@ int omap4iss_ipipe_init(struct iss_device *iss)
  */
 void omap4iss_ipipe_cleanup(struct iss_device *iss)
 {
-	/* FIXME: are you sure there's nothing to do? */
+	struct iss_ipipe_device *ipipe = &iss->ipipe;
+
+	media_entity_cleanup(&ipipe->subdev.entity);
 }

drivers/staging/media/omap4iss/iss_ipipeif.c

@@ -771,8 +771,6 @@ static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif)
 
 void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif)
 {
-	media_entity_cleanup(&ipipeif->subdev.entity);
-
 	v4l2_device_unregister_subdev(&ipipeif->subdev);
 	omap4iss_video_unregister(&ipipeif->video_out);
 }
@@ -826,5 +824,7 @@ int omap4iss_ipipeif_init(struct iss_device *iss)
  */
 void omap4iss_ipipeif_cleanup(struct iss_device *iss)
 {
-	/* FIXME: are you sure there's nothing to do? */
+	struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
+
+	media_entity_cleanup(&ipipeif->subdev.entity);
 }

drivers/staging/media/omap4iss/iss_resizer.c

@@ -815,8 +815,6 @@ static int resizer_init_entities(struct iss_resizer_device *resizer)
 
 void omap4iss_resizer_unregister_entities(struct iss_resizer_device *resizer)
 {
-	media_entity_cleanup(&resizer->subdev.entity);
-
 	v4l2_device_unregister_subdev(&resizer->subdev);
 	omap4iss_video_unregister(&resizer->video_out);
 }
@@ -870,5 +868,7 @@ int omap4iss_resizer_init(struct iss_device *iss)
  */
 void omap4iss_resizer_cleanup(struct iss_device *iss)
 {
-	/* FIXME: are you sure there's nothing to do? */
+	struct iss_resizer_device *resizer = &iss->resizer;
+
+	media_entity_cleanup(&resizer->subdev.entity);
 }